Cyclops : Jurnal Teknik Sipil dan Perencanaan

SOIL STABILIZATION USING PUMICE ASH

Pangeran Holong Sitorus — 2024-12-20

This study aims to analyze the characteristics of native soil in the Koya region and identify the most effective additive variations for improving soil strength. The research involved testing the native soil properties using standard laboratory methods and conducting soil strength tests with various additive mixtures. The results showed that the plasticity index (PI) of the native soil was 30.11%. After stabilization using pumice ash at concentrations of 9%, 12%, and 15%, the PI values decreased to 21.68%, 20.08%, and 20.48%, respectively. This demonstrates that pumice ash qualifies as an effective stabilizing material for reducing high PI values. In the CBR test, the native soil had a CBR value of 0.96%, which increased to 20.08% after stabilization with 12% pumice ash. Based on the test results, it can be concluded that the addition of pumice ash at concentrations of 9%, 12%, and 15% does not result in significant differences in soil stabilization levels or CBR values.

1 ANALYSIS OF THE USE OF THE LINE OF BALANCE (LOB) METHOD FOR SCHEDULING REPEATED CONSTRUCTION PROJECTS (SPECIAL COMMUNITY HOUSING 15 UNITS OF KEEROM DISTRICT)

Ratna Gunanto — 2024-12-20

Large-scale housing projects are repetitive or repetitive, and labor energy intake needs to be regulated, because a repetitive project work must be able to proceed without delay. Recurring construction scheduling. The purpose of this research is to apply the Line of Balance method to planning and scheduling a linear building project on a 15-unit house project. Information and field data were collected through observation and interviews with house construction contractors. Special housing development 7 Kerom. The findings show that LOB is suitable for repetitive construction projects such as housing, because LOB can explain the schedule of each recurring activity for each housing unit depicted in a line diagram, and by using LOB contractors can detect activities directly that are disrupted during the implementation period.

PROJECT COST AND TIME TRADE-OFFS IN THE DOYO HOUSING PROJECT

muhammad zulfikar — 2024-12-20

The Doyo Housing Development Project in Doyo, Sentani, Jayapura Regency, Papua experienced a delay in work. The deviation of the delay in the 20th week reached 25.23%. The purpose of this study is to analyze the optimization of costs and time. Identification of delay factors will be carried out using the Fault Tree Analysis (FTA) method. The crashing activities carried out are in the form of additional working hours (overtime) or additional labor. The results of this study, there are 3 main intermediate events as factors causing delays including by the Owner, by the Contractor and by environmental and surrounding conditions with a probability value of 0.712. The cost of additional labor to overcome the delay is Rp. 61,797,075.00.

COMMUNITY PARTICIPATION IN THE DEVELOPMENT OF CULTURAL TOURISM OF THE SAHU TRIBE OF GAMTALA VILLAGE

Moh Rizki A Karim — 2024-12-20

Gamtala Village is a tourist village that has not been well developed. In modern life, shifts in culture and tradition are very likely to occur. Cultures that are not relevant to the age will slowly become extinct. A positive and developing culture in the community needs to be maintained. Sasadu is the traditional architecture of the sahu tribe that functions as a meeting room and the implementation of traditional rituals, besides that sasadu is a symbol and identity of the sahu tribe that unites the sahu tribe. With modern life and the development of this technology, Sasadu buildings began to experience the threat of extinction. To overcome the culture of the sahu tribe and the sasadu's continuous gaze, it needs to be made as a tour to introduce to the world and preserve culture. Methods The research method uses a descriptive qualitative approach with a SWOT analysis. The results showed that the role of community participation was very large in realizing cultural tourism in Gamtala Village.

WATER BASED ACTIVE FIRE PROTECTION SYSTEM IN OFFICE ENVIRONMENTS AND BUILDINGS

bernard harianja — 2024-12-20

This study is part of previous research. The purpose of the study was to find the cause of the inability of the environment and buildings to protect against fire hazards and to plan an appropriate fire protection system. The object of the study was the Jayapura Regent's Office Complex located in Sentani City. At the research locus, no water-based Active Fire Protection system equipment was found, such as a manual detection system (Yard Hydrant and Building Hydrant), an automatic detection system (sprinkler, shaft or vertical corridor for placing vertical pipes) and City Hydrants along Arterial roads or around the Office Complex.
The research method uses a quantitative method with a calculation tool SNI 03-1735-2000 concerning Procedures for Planning Building Access and Environmental Access for Preventing Fire Hazards in Buildings. The researcher calculated the land area (22.25 Ha) and the floor area of the building (44,403 M2) using the ArcGIS Pro 2.8 application. Next, the researcher will calculate the number of Yard Hydrants and raw water capacity needed by estimating the travel time of the Fire Engine to the fire location of 45 minutes. The number of Yard Hydrants obtained is 45 Sets which will be distributed to 8 Zones and placed at the 4 corners of the outer yard of the building and must be accessible by the Fire Engine.
The volume of raw water for 45 Sets of Hydrants is 2,484 m3 (water stock). Based on the 2019 fire incident, where the fire engulfed the building floor covering an area of 8,744 m2 (20%), it can be estimated that the amount of raw water to be provided is 25% of the total reserve water (2,484 m3) which is 621 m3 ~ 15 Sets of Hydrants, with the provision that 15 of the 45 sets of Hydrants must work effectively simultaneously according to the planned pressure for 45 minutes.

STUDY OF THE FUNCTION OF LANDSCAPE PLANT ON THE GREEN LANE OF THE ROAD MEDIAN DR. SAM RATULANGI JAYAPURA

Riefaella Barends — 2024-12-20

Dr. Street Sam Ratulangi is one of the main roads in Jayapura City, of course this road plays an important role in transportation routes because it connects the Dok 5 Atas area (in front of the Christ the King Catholic Church Dok 5) to Jayapura City (in front of the GKI Pengharapan Jayapura church building). So the existence of green lanes in the median also plays an important role, not only as a road divider but also as an element to decorate the city as well as the identity of the city of Jayapura. With the highway landscape, roads that seem hard and stiff get a touch of soft elements in the form of plants.

The median green lane locations that will be studied are the median green lane in front of the APO 45 gas station to the median green lane in front of Taman Mandiri, Jayapura City. The objectives of this research include (1) evaluating the function of architectural aspects, (2) evaluating the aesthetic function, (3) evaluating the maintenance function and (4) providing appropriate recommendations for the management of the median green belt on Jalan Dr. Sam Ratulangi Jayapura City. The methods applied in this research are: (1) literature study related to the scope of the research, (2) observation and inventory by dividing the median green lane into several segments, (3) analysis data, and (4) recommendations for lane development green median.

Key words: median, green lane, road divider plants.